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Pt/BEA–Al2O3 catalysts for the isomerization of benzene/heptane mixtures. I: Optimizing the support’s composition

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Abstract

Pt/BEA–Al2O3 catalysts for the hydroisomerization of benzene-containing gasoline fractions are studied using a model feedstock (20% benzene and 80% n-heptane). The catalysts are prepared by varying the zeolite content from 5 to 70 wt % at a constant Pt loading of 0.3 wt % in all samples, with an aqueous H2PtCl6 solution being used as the Pt precursor. The acid properties of the samples are studied by means of temperature-programmed desorption (TPD). The effect of the support’s zeolite/binder ratio on the activity of the catalysts is determined: an increase in the zeolite content raises the system’s acidity and shifts the range of the reaction toward lower temperatures. The optimum zeolite/binder ratio is found to be 30% BEA/70% Al2O3. Changing the SiO2/Al2O3 ratio of the zeolite from 25 to 40 is shown to have no noticeable effect on catalyst activity. The use of the catalysts supported on 30% BEA/70% Al2O3 in the hydroisomerization of benzenecontaining gasoline fractions can be recommended for improving environmental performance.

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Authors and Affiliations

  1. Institute of Hydrocarbons Processing, Siberian Branch, Russian Academy of Sciences, Omsk, 644040, Russia

    E. A. Belopukhov, I. M. Kalashnikov, M. D. Smolikov, D. I. Kir’yanov, T. I. Gulyaeva & A. S. Belyi

  2. Omsk State Technical University, Omsk, 644050, Russia

    E. A. Belopukhov, I. M. Kalashnikov, M. D. Smolikov & A. S. Belyi

Authors
  1. E. A. Belopukhov
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  2. I. M. Kalashnikov
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  3. M. D. Smolikov
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  4. D. I. Kir’yanov
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  5. T. I. Gulyaeva
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  6. A. S. Belyi
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Corresponding author

Correspondence to E. A. Belopukhov.

Additional information

Original Russian Text © E.A. Belopukhov, I.M. Kalashnikov, M.D. Smolikov, D.I. Kir’yanov, T.I. Gulyaeva, A.S. Belyi, 2016, published in Kataliz v Promyshlennosti.

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Belopukhov, E.A., Kalashnikov, I.M., Smolikov, M.D. et al. Pt/BEA–Al2O3 catalysts for the isomerization of benzene/heptane mixtures. I: Optimizing the support’s composition. Catal. Ind. 9, 48–53 (2017). https://doi.org/10.1134/S2070050417010032

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  • DOI: https://doi.org/10.1134/S2070050417010032

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